In a tug of war, the team on the left pulls with a force of 430 N and the team on the right pulls with a force of 420 N. What is the net force on the rope? A. 10 N to the right
B. 10 N to the left
C. 420 N to the right
D. 430 N to the left

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."